Provides emergency power for your mobile gadgets anywhere you go. Get up to 10 hours of talking, 20 hours of playing or 28 hours of listening. Uses 2 AA batteries and iGo power tip technology to power/charge your mobile gadget. Provides an emergency power source when away from power outlets. Reusable - use it again and again, just replace the batteries. Compact lightweight design - convenient for travel of emergency use.